Recent content by FX

Thanks for your thoughts. Still slightly confused. Para 2.4 of B1 states: 2.4 Dwelling houses with one internal stair should comply with paragraphs 2.5 and 2.6. In dwelling houses with more than one stair, the stairs should provide effective alternative means of escape. The stairs should be...

Hi Patsy, Are your external walls pointed with lime mortar and what about the internal walls - lime plaster or lime mortar behind the dot & dab? There is a risk of damp from under the floor being 'pushed' outwards and into the walls if you lay a DPM but if the walls are lime mortar/plaster any...

Trying to get my head around the requirements when you have two sets of stairs in a single dwelling (one family only). Situation: Loft room leading down single set of stairs to a first floor landing. The options are then to either continue down this set of stairs into a lounge which has direct...

Quite Spark123, I'm not just thinking of short pieces of copper pipe supplementary bonded in a bathroom. It could equally apply to a plastic installation with metal taps in a kitchen, utility or cloakroom. None of which are required to be bonded and I suspect most people don't as they are...

Not directly, but see here

Bernardgreen... You'd need to ask the NIC why they consider it would be hazardous. However, do you ensure that even if the pipe work in a building is all plastic except for the taps that they are all connected to the MET? If not, then you are working against your own logic. The answer I...

It would appear that it is down to the designer to determine if it is necessary. Although the OSG (17th) section 4.4 does offer some advice: "4.4 Main protective bonding of plastic services: There is no requirement to main bond an incoming service where the incoming service pipe and the...

That being the case, then ALL taps and pieces of copper pipe (I'm thinking tails to taps and rads) even though they may be supplied by a complete plastic piping system should also be earthed back to the MET. How many people do this? Also are the main water supply pipes not earthed by the supplier?

Looking at it another way, is this section of copper tube any different from a pair of taps in a cloakroom if the water supply is MDPE and the house is plumbed in Hep20 and then metal taps at the basin. Surely, these are equally liable to introduce a potential?

According to the definition I have of Main Eqiupotential Bonding or Protective Eqiupotential Bonding) it states that MEB conductors are required to connect the following metallic parts to the MET, where they are extraneous conductive parts The definition of an extraneous conductive part is A...

Hope someone maybe able to help with these queries. Main Bonding Incoming water main is in mdpe coming into the kitchen. It then has a copper stop tap and runs for about 2-3m in copper, mainly behind units, apart from top half metre as it enters into the loft (single storey). At this point...